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ratchet

Guardrails, task board and spec-driven agent roles for Claude Code, enforced by hooks instead of prompts.

Code you can checkTerminal + desktopPaneStatus lineToastBoxText

What it does

  • Draws a pane, the status line, toasts
  • Adds /ctx
  • Hooks session.end, session.measure, session.start, turn.step
  • Starts processes

Good points

  • No network calls
  • Written in TypeScript
  • Handles errors
  • Writes no files

Code to start from

Two kinds: a starter modscode writes from the design above, and the lines of the mod's own code that draw it.

Starter (register.tsx)

register.tsx
import type { Register } from 'claude-code'

// Drawn like ratchet by ratchet contributors (pane, status, toast), as modscode read it from the mod's code:
// https://modscode.com/gallery/eduardoillanes-ratchet/
// Written by modscode from that reading, not copied from the mod: use it as you like.
// Each value below stands for one the mod works out at run time; put in your own.
export const register: Register = on => {
  // the pane: open it with $.ui.open({ id: 'my-pane', title: "Context" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text } = $.ui.resolve(e)
    const percentage = '…'
    const compact = '…'
    const compact2 = '…'
    const model = '…'
    const name = '…'
    const compact3 = '…'
    const value = '…'
    const name2 = '…'
    const compact4 = '…'
    const value2 = '…'
    const name3 = '…'
    const compact5 = '…'
    const value3 = '…'
    const compact6 = '…'
    const sparkline = '…'
    const lastDelta = '…'
    const value4 = '…'
    const tool = '…'
    const compact7 = '…'
    const label = '…'
    const tool2 = '…'
    const compact8 = '…'
    const label2 = '…'
    const tool3 = '…'
    const compact9 = '…'
    const label3 = '…'
    const id = '…'
    const compact10 = '…'
    const shortType = '…'
    const tokens = '…'
    const shortType2 = '…'
    const tokens2 = '…'
    const shortType3 = '…'
    const tokens3 = '…'
    const type = '…'
    const description = '…'
    const numbers = '…'
    const type2 = '…'
    const numbers2 = '…'
    const type3 = '…'
    const numbers3 = '…'
    return (
      <Box flexDirection="column">
        <Text bold>
          <Text>
            {percentage}
            %
          </Text>
          {" · "}
          {compact}
          {" /"}
          {" "}
          {compact2}
          <Text dimColor>
            {" "}
            {model}
          </Text>
        </Text>
        <Box flexDirection="row">
          <Text>
            ████████
          </Text>
          <Text>
            ████████
          </Text>
          <Text>
            ████████
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {"■ "}
          </Text>
          <Text>
            {name}
            {" "}
            {compact3}
            {" "}
            {value}
            %
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {"■ "}
          </Text>
          <Text>
            {name2}
            {" "}
            {compact4}
            {" "}
            {value2}
            %
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {"■ "}
          </Text>
          <Text>
            {name3}
            {" "}
            {compact5}
            {" "}
            {value3}
            %
          </Text>
        </Box>
        <Text dimColor>
          {"auto-compact at "}
          {compact6}
        </Text>
        <Text bold color="#B877DB">
          Trend
        </Text>
        <Text>
          <Text>
            {sparkline}
          </Text>
          {lastDelta}
        </Text>
        <Text dimColor>
          {value4}
        </Text>
        <Text bold color="#B877DB">
          Top consumers
        </Text>
        <Box flexDirection="row">
          <Text>
            {tool}
            {" "}
          </Text>
          <Text wrap="truncate-end">
            {compact7}
            {" "}
            {label}
            {" "}
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {tool2}
            {" "}
          </Text>
          <Text wrap="truncate-end">
            {compact8}
            {" "}
            {label2}
            {" "}
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {tool3}
            {" "}
          </Text>
          <Text wrap="truncate-end">
            {compact9}
            {" "}
            {label3}
            {" "}
          </Text>
        </Box>
        <Text dimColor>
          → reads this size can go to ratchet:reader
        </Text>
        <Text bold color="#B877DB">
          {id}
          {" "}
          <Text dimColor>
            {"· "}
            {compact10}
            {" tokens so far"}
          </Text>
        </Text>
        <Box flexDirection="row">
          <Text>
            ████████
          </Text>
          <Text>
            ████████
          </Text>
          <Text>
            ████████
          </Text>
        </Box>
        <Text wrap="truncate-end">
          <Text>
            {" · "}
            {shortType}
            {" "}
            {tokens}
            %
          </Text>
          <Text>
            {" · "}
            {shortType2}
            {" "}
            {tokens2}
            %
          </Text>
          <Text>
            {" · "}
            {shortType3}
            {" "}
            {tokens3}
            %
          </Text>
        </Text>
        <Text bold color="#B877DB">
          Subagents
        </Text>
        <Box flexDirection="column">
          <Text wrap="truncate-end">
            {"● "}
            <Text bold>
              {type}
            </Text>
            {`  ${description}`}
          </Text>
          <Box flexDirection="row">
            <Text>
              {"  "}
            </Text>
            <Text>
              ████████░░░░░░░░
            </Text>
            <Text>
              {numbers}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column">
          <Text wrap="truncate-end">
            {"● "}
            <Text bold>
              {type2}
            </Text>
            {`  ${description}`}
          </Text>
          <Box flexDirection="row">
            <Text>
              {"  "}
            </Text>
            <Text>
              ████████░░░░░░░░
            </Text>
            <Text>
              {numbers2}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column">
          <Text wrap="truncate-end">
            {"● "}
            <Text bold>
              {type3}
            </Text>
            {`  ${description}`}
          </Text>
          <Box flexDirection="row">
            <Text>
              {"  "}
            </Text>
            <Text>
              ████████░░░░░░░░
            </Text>
            <Text>
              {numbers3}
            </Text>
          </Box>
        </Box>
      </Box>
    )
  })

  on('session.start', async ($, e, next) => {
    const statusLine = '…'
    const lastDelta = '…'
    const tail = '…'
    const percent = '…'
    await $.ui.status(`${statusLine}${lastDelta}${tail}`)
    await $.ui.toast(`Context at ${percent}%: run /compact, or write a handoff with ratchet task handoff and continue in a fresh session`)
    return next(e)
  })
}

The mod's own code

Shown under the mod's licence (MIT); its text is below. Keep the notice if you copy these lines.

hooks/context-meter/register.tsx lines 242–397 · Pane
hooks/context-meter/register.tsx:242
  on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
    const { Box, Text } = $.ui.resolve(e)
    try {
      // Read to subscribe: each new reading redraws the pane.
      await read($, reading)
      const readings = await read($, agents)
      const turns = await read($, history)
      const held = await read($, task)
      const said = await $.session.messages({ as: 'api' }).catch(() => [])
      const consumers = topConsumers(Array.isArray(said) ? said : [], 5)
      const context = await $.session.usage({ breakdown: 'summary' }).then(
        usage => usage.context,
        () => undefined,
      )
      const breakdown = context?.breakdown

      if (context === undefined || breakdown === undefined) {
        return <Text dimColor>No breakdown yet: it arrives with the first response.</Text>
      }

      const rows = breakdown.categories.filter(row => row.kind !== 'deferred')
      const width = Math.max(10, e.props.bodyColumns - 2)
      const widths = cells(
        rows.map(row => row.tokens),
        breakdown.rawMaxTokens,
        width,
      )
      const nameWidth = Math.max(...rows.map(row => row.name.length))
      const colors = categoryColors(rows.map(row => row.kind))
      // The agent list drops an agent once it is done; the readings keep who it was.
      const listed = await $.agent.list().catch(() => [])
      const isRunning = new Set(listed.filter(agent => agent.status === 'running').map(agent => agent.id))
      const roleCells = held === null ? [] : cells(held.roles.map(role => role.tokens), held.total, width)
      const recent = Object.entries(readings).sort(([, a], [, b]) => b.at - a.at)

      return (
        <Box flexDirection="column">
          <Text bold>
            <Text color={fillColor(breakdown.percentage)}>{breakdown.percentage}%</Text> · {compact(breakdown.totalTokens)} /{' '}
            {compact(breakdown.rawMaxTokens)}
            <Text dimColor> {breakdown.model}</Text>
          </Text>
          <Box flexDirection="row">
            {rows.map((row, i) => (
              <Text color={colors[i]} dimColor={row.kind === 'free'}>
                {(row.kind === 'used' ? '█' : row.kind === 'buffer' ? '▒' : '░').repeat(widths[i] ?? 0)}
              </Text>
            ))}
          </Box>
          {rows.map((row, i) => (
            <Box flexDirection="row">
              <Text color={colors[i]}>{row.kind === 'used' ? '■ ' : '□ '}</Text>
              <Text dimColor={row.kind !== 'used'}>
                {row.name.padEnd(nameWidth)} {compact(row.tokens).padStart(5)}{' '}
                {((row.tokens / breakdown.rawMaxTokens) * 100).toFixed(1).padStart(5)}%
              </Text>
            </Box>
          ))}
          {breakdown.isAutoCompactEnabled && breakdown.autoCompactThreshold !== undefined && (
            <Text dimColor>auto-compact at {compact(breakdown.autoCompactThreshold)}</Text>
          )}
          {turns.length > 1 && (
            <Text bold color={CELESTIAL.accent}>
              Trend
            </Text>
          )}
          {turns.length > 1 && (
            <Text>
              <Text color={fillColor(breakdown.percentage)}>{sparkline(turns, context.window, width - lastDelta(turns).length)}</Text>
              {lastDelta(turns)}
            </Text>
          )}
          {turns.length > 1 && breakdown.autoCompactThreshold !== undefined && (
            <Text dimColor>
              {(() => {
                const left = turnsToCompact(turns, breakdown.autoCompactThreshold)
                if (left === null) return 'not growing'
                if (left === 0) return 'at the auto-compact threshold'
                return `~${left} turn${left === 1 ? '' : 's'} to auto-compact at this pace`
              })()}
            </Text>
          )}
          {consumers.length > 0 && (
            <Text bold color={CELESTIAL.accent}>
              Top consumers
            </Text>
          )}
          {consumers.map((one, i) => (
            <Box flexDirection="row">
              <Text color={CELESTIAL.series[i % CELESTIAL.series.length]}>{one.tool.padEnd(6)} </Text>
              <Text wrap="truncate-end">
                {compact(one.tokens).padStart(5)} {one.label}{' '}
              </Text>
            </Box>
          ))}
          {consumers.some(one => one.tool === 'Read' && one.tokens >= 5_000) && (
            <Text dimColor>→ reads this size can go to ratchet:reader</Text>
          )}
          {held !== null && held.total > 0 && (
            <Text bold color={CELESTIAL.accent}>
              {held.id} <Text dimColor>· {compact(held.total)} tokens so far</Text>
            </Text>
          )}
          {held !== null && held.total > 0 && (
            <Box flexDirection="row">
              {roleCells.map((count, i) => (
                <Text color={CELESTIAL.series[i % CELESTIAL.series.length]}>{'█'.repeat(count)}</Text>
              ))}
            </Box>
          )}
          {held !== null && held.total > 0 && (
            <Text wrap="truncate-end">
              {held.roles.slice(0, 4).map((role, i) => (
                <Text color={CELESTIAL.series[i % CELESTIAL.series.length]}>
                  {i > 0 ? ' · ' : ''}
                  {shortType(role.role)} {Math.round((role.tokens / held.total) * 100)}%
                </Text>
              ))}
            </Text>
          )}
          {recent.length > 0 && (
            <Text bold color={CELESTIAL.accent}>
              Subagents
            </Text>
          )}
          {recent.map(([id, one]) => {
            const isLive = isRunning.has(id)
            const window = agentWindow(one.peak, context.window)
            const percent = Math.round((one.tokens / window) * 100)
            const peak = one.peak > one.tokens ? ` · peak ${compact(one.peak)}` : ''
            const numbers = ` ${percent}% · ${compact(one.tokens)}/${compact(window)} · ${one.steps} req${peak}`
            const room = Math.max(6, Math.min(20, e.props.bodyColumns - 2 - numbers.length))
            return (
              <Box flexDirection="column">
                <Text dimColor={!isLive} wrap="truncate-end">
                  {isLive ? '● ' : '○ '}
                  <Text bold>{one.type}</Text>
                  {one.description ? `  ${one.description}` : ''}
                </Text>
                <Box flexDirection="row">
                  <Text>{'  '}</Text>
                  <Text color={fillColor(percent)} dimColor={!isLive}>
                    {bar(percent, room)}
                  </Text>
                  <Text dimColor={!isLive}>{numbers}</Text>
                </Box>
              </Box>
            )
          })}
        </Box>
      )
    } catch {
      // Whatever fails while drawing, the pane still says something.
      return <Text dimColor>No breakdown yet: it arrives with the first response.</Text>
    }
  })
Licence text (MIT)
MIT License

Copyright (c) 2026 Eduardo Illanes Golborne

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

What its code calls

runs programsreads filesdrives Claude

The design, read from code

Drawn from the mod's source at the commit read, not from a run: a list is drawn three times, a condition takes its first branch that draws in the desktop app, and a value only the run time knows is shown as a made-up sample (dotted underline) or left out. Colours and type are this site's.

What its code shows

Read from the source at commit 7f030e7bb0f5 on 2026-10-06. The first group decides whether a mod is listed; the rest is for you to weigh. A later commit is not read until the next crawl.

Decides the listing: code you can check
Entry readEvery module hooks/hooks.json names was read.hooks/context-meter/register.tsx
ParsesEvery file parses as TypeScript or JavaScript.2 files parsed
All its code is in the modEvery import is a file of the mod or the engine's own module; no packages, no require.all its code is in the mod
ReadableNo minified lines, no eval or new Function, no import of a computed path, no encoded blobs.no minified code, no eval, no encoded blobs
Calls in the openNetwork and programs are reached as $.http.fetch and $.process.run in place, never passed around.every call outside goes through $ in the open
For you to weigh before installing
Where it drawsThe terminal, the desktop app, both, or nothing (hooks only: a guard or a prompt rewriter), as its code says. Shown, never a reason to leave a mod out.draws in the terminal and the desktop app, the same in both
Install lineWhether its repository's own .claude-plugin/marketplace.json lists it, so it installs from that marketplace with the lines on its page.listed in its repository's .claude-plugin/marketplace.json: installs from there
Programs on WindowsWhether every program it starts through $.process exists on Windows (tail, date, open, osascript, /usr/… do not).runs no program a Windows PC lacks
NetworkWhether every fetch names its https host in the code.no network
ProgramsWhether every program it starts is named in the code and is not a shell, an interpreter or a network tool.hooks/context-meter/register.tsx:88 a program named at run time; hooks/context-meter/register.tsx:99 a program named at run time
Reads and sendsWhether it both reads files or environment variables and reaches the network.reaches no network
Keys in the sourceWhether the source holds what looks like an API key or a private key.no keys in the source
LicenceAn open licence (MIT, Apache-2.0, BSD, ISC, Unlicense, 0BSD, CC0) with its text lets modscode show its code; otherwise the code is linked.MIT

This is a reading of the code text, not a security review: it does not run the mod, and it cannot see what a program the mod starts does. The check before installing is yours. How mods are chosen

Install it

Check it yourself before you install it. Mods run unsandboxed, with your permissions, and modscode does not vouch for what this code does. Read the code below (or run claude plugin validate . in its folder), weigh what it reaches, and install the commit you read.

Its repository is its marketplace. Add that marketplace (in the terminal with these commands, or in the desktop app's plugin settings) and install the mod from it:

/plugin marketplace add EduardoIllanes/ratchet
/plugin install ratchet@ratchet

This installs the marketplace's latest commit, which may not be the one read here (7f030e7bb0f5). Compare them before you install.

Ask Claude about it

With the modscode connector added, Claude can read this design, what its code reaches and its code, and build on them. Ask it like this:

Read the modscode design "eduardoillanes-ratchet" with its code and make me a pane like it

Search them from Claude: the MCP connector

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